Secondary battery



FIG. 1 is a perspective view of a secondary battery showing our new design;

FIG. 2 is a front elevational view thereof

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left-side elevational view thereof

FIG. 5 is a right-side elevational view thereof

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is an enlarged view of area 8 designated by the dot-dash broken lines in FIG. 1 ; and,

FIG. 9 is an enlarged cross sectional view taken along line 9-9 in FIG. 4 in the direction of line 9′-9′ in FIG. 2 .

The rectangle and splined curve indicated by the dot-dash broken lines shown in FIG. 1 and FIG. 8 illustrate the boundary of enlarged area of the design. The dot-dash broken lines shown in FIG. 1 and FIG. 8 form no part of the claimed design. The even spaced broken lines in FIG. 9 depict portions of the secondary battery that form no part of the claimed design. The dot- dash broken line shown in FIG. 9 indicates the section line and forms no part of the claimed design. 

CLAIM The ornamental design for a secondary battery, as shown and described. 